US 12,457,564 B2
Method for transmitting power headroom, terminal device, and network device
Yuanyuan Wang, Dongguan (CN); Ye Si, Dongguan (CN); and Huaming Wu, Dongguan (CN)
Assigned to VIVO MOBILE COMMUNICATION CO., LTD., Dongguan (CN)
Filed by VIVO MOBILE COMMUNICATION CO., LTD., Dongguan (CN)
Filed on Sep. 28, 2022, as Appl. No. 17/955,495.
Application 17/955,495 is a continuation of application No. PCT/CN2021/083219, filed on Mar. 26, 2021.
Claims priority of application No. 202010246507.0 (CN), filed on Mar. 31, 2020.
Prior Publication US 2023/0027631 A1, Jan. 26, 2023
Int. Cl. H04W 52/36 (2009.01); H04L 5/00 (2006.01); H04W 52/24 (2009.01)
CPC H04W 52/365 (2013.01) [H04L 5/0051 (2013.01); H04W 52/242 (2013.01); H04W 52/367 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method for transmitting a power headroom, performed by a terminal device, the method comprising:
sending a Power Headroom (PH) value of a serving cell to a network device, wherein the PH value is a first PH value of a first Sounding Reference Signal (SRS) or a second PH value of a second SRS,
wherein the first PH value is obtained based on first configuration information of the first SRS, the first SRS is an SRS used for positioning, and the second SRS is an SRS used for measurement, and
wherein before sending the PH value of the serving cell to the network device, the method further comprises:
calculating a path loss value based on a transmit power of a path loss reference signal and a receive power obtained by measuring the path loss reference signal; and
obtaining the first PH value based on the path loss value, a p0 power value, a path loss coefficient, and a maximum transmit power of the serving cell,
wherein the first configuration information comprises the path loss reference signal, the p0 power value, and the path loss coefficient, and
wherein the path loss reference signal is a signal transmitted by a target cell, and the target cell comprises at least one of the serving cell or a neighboring cell.